From @Sky0Painter "I dare Luna to prank Celestia for as long as she can then blame it on Twilight or someone

Luna:MY BODY IS READY!

Celestia:*reading Equestria Daily* Luna don't say that.

Luna: *snickering*

Later that evening*

Luna: *puts whoopee cushions under Celestia's throne* *short-sheets her bed* *pays Celestia's guards to not come to work the next day* *makes styrofoam cake with trick candles*

Afterwards

Celestia: *getting ready for a meeting* This meeting is if utter importance and blahblahblahblahblahblahblahblahblah *goes to meeting and sits on throne* xpjdphdpusluspyspyspysososlgaitatos*aka fart noises* *all representatives look at her surprised* I swear that wasn't me!
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*celestia getting ready for bed* And the sun sets *tries I get into bed. Fails epically* What is wrong with me!?
*wakes up* guards! *sees no guard* oh well.

Luna: DEAREST OF SISTERS! I HAVE BROUGHT YOU THE CAKE OF BIRTHDAYS!

*hands Celestia the "cake". Celestia eats the cake,
Spits it out immediately.* WHAY IS THIS!?!?

Luna: the pink pony did it!

*dun dun dun!*